{"id":51630,"date":"2026-01-21T12:45:51","date_gmt":"2026-01-21T04:45:51","guid":{"rendered":"https:\/\/zetarmold.com\/?p=51630"},"modified":"2026-05-04T11:30:07","modified_gmt":"2026-05-04T03:30:07","slug":"spi-%ed%91%9c%eb%a9%b4-%eb%a7%88%ea%b0%90-%ed%91%9c%ec%a4%80","status":"publish","type":"post","link":"https:\/\/zetarmold.com\/ko\/spi-%ed%91%9c%eb%a9%b4-%eb%a7%88%ea%b0%90-%ed%91%9c%ec%a4%80\/","title":{"rendered":"What Are SPI Surface Finish Standards and How Do You Choose the Right One?"},"content":{"rendered":"<h2>What Is the SPI Surface Finish Standard?<\/h2>\n<p>\uadf8\ub9ac\uace0 <a href=\"https:\/\/zetarmold.com\/ko\/injection-molding-complete-guide\/\">SPI<\/a><sup id=\"fnref1:1\"><a href=\"#fn:1\" class=\"footnote-ref\">1<\/a><\/sup> \ud45c\uba74 \ub9c8\uac10 \ud45c\uc900\uc740 \uae08\ud615 \uce90\ube44\ud2f0 \ud45c\uba74 \ud488\uc9c8\uc744 \uc815\uc758\ud558\ub294 \ub124 \ub4f1\uae09 \uc2dc\uc2a4\ud15c(A\ubd80\ud130 D\uae4c\uc9c0)\uc785\ub2c8\ub2e4.<\/p>\n<p>RFQ \uc900\ube44 \ubc0f \uacf5\uae09\uc5c5\uccb4 \uc790\uaca9 \uac80\ud1a0\ub97c \uc704\ud574 \uc6b0\ub9ac\uc758 \uacf5\uae09\uc5c5\uccb4 \uc18c\uc2f1 \uac00\uc774\ub4dc\ub97c \ucc38\uc870\ud558\uc138\uc694.<\/p>\n<p>For a broader look at <a href=\"https:\/\/zetarmold.com\/ko\/%ec%82%ac%ec%b6%9c-%ea%b8%88%ed%98%95-%ec%99%84%eb%b2%bd-%ea%b0%80%ec%9d%b4%eb%93%9c\/\">\uc0ac\ucd9c \uae08\ud615 \uc124\uacc4<\/a>, our pillar guide covers tooling structure, thermal control, and manufacturability tradeoffs.<\/p>\n<p>SPI \ud45c\uba74 \ub9c8\uac10 \ud45c\uc900\uc740 \uc804 \uc0b0\uc5c5 \ubd84\uc57c\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \ubd84\ub958 \uc2dc\uc2a4\ud15c\uc785\ub2c8\ub2e4. <a href=\"https:\/\/zetarmold.com\/ko\/injection-molding-complete-guide\/\">\uc0ac\ucd9c \uc131\ud615<\/a> \uc131\ud615 \ud50c\ub77c\uc2a4\ud2f1 \ubd80\ud488\uc758 \ucf54\uc2a4\uba54\ud2f1 \ubc0f \ucd09\uac10 \ub9c8\uac10 \uc694\uad6c\uc0ac\ud56d\uc744 \uc815\uc758\ud558\ub294 \ud504\ub85c\uc81d\ud2b8. \uad6c\ub9e4\uc790\uc5d0\uac8c\ub294 \uacac\uc801\uc744 \uc704\ud55c \uacf5\ud1b5 \uc5b8\uc5b4\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4, <a href=\"https:\/\/zetarmold.com\/ko\/%ec%82%ac%ec%b6%9c-%ea%b8%88%ed%98%95-%ec%99%84%eb%b2%bd-%ea%b0%80%ec%9d%b4%eb%93%9c\/\">\uae08\ud615 \ud3f4\ub9ac\uc2f1<\/a><sup id=\"fnref1:2\"><a href=\"#fn:2\" class=\"footnote-ref\">2<\/a><\/sup>, \uac80\uc0ac \uc0d8\ud50c, \ucd5c\uc885 \ubd80\ud488 \uc2b9\uc778.<\/p>\n<div class=\"callout-key\" style=\"background:#f0f7ff; border-left:4px solid #2563eb; padding:1em 1.2em; border-radius:6px; margin:1.5em 0;\">\n<strong>\uc8fc\uc694 \ub0b4\uc6a9<\/strong><\/p>\n<ul>\n<li>SPI \ud45c\uba74 \ud53c\ub2c8\uc2dc\ub294 \uc678\uad00 \uc694\uad6c \uc0ac\ud56d\uacfc \ub3c4\uad6c \ube44\uc6a9 \uacb0\uc815\uc774\uc790 \ub2e8\uc21c\ud55c \ub3c4\uba74 \ub178\ud2b8\uac00 \uc544\ub2d9\ub2c8\ub2e4.<\/li>\n<li>\ud53c\ub2c8\uc2dc\ub97c \ud568\uaed8 \uc120\ud0dd\ud558\uc138\uc694: \ub808\uc9c4, \ub4dc\ub798\ud504\ud2b8 \uac01\ub3c4, \uc2a4\ud2f8 \ub4f1\uae09, \uc774\uc81d\uc158 \ub808\uc774\uc544\uc6c3, \ud398\uc778\ud2b8 \ub610\ub294 \ud14d\uc2a4\ucc98 \ud544\uc694, \uac80\uc0ac \ubc29\ubc95.<\/li>\n<li>DFM \ub2e8\uacc4\uc5d0\uc11c \ubaa9\ud45c \ub9c8\uac10\uc744 \ud655\uc815\ud558\uc5ec \uc5f0\ub9c8, \uc0d8\ud50c\ub9c1 \ubc0f \ucd5c\uc885 \uc2b9\uc778\uc774 \ud6c4\ubc18 \ub2e8\uacc4\uc758 \ube44\uc6a9\uc774\ub098 \ub9ac\ub4dc \ud0c0\uc784 \ubb38\uc81c\uac00 \ub418\uc9c0 \uc54a\ub3c4\ub85d \ud558\uc138\uc694.<\/li>\n<\/ul>\n<\/div>\n<p>\uc774 \ud45c\uc900\uc740 \uc0b0\uc5c5 \ub514\uc790\uc774\ub108, \uc5d4\uc9c0\ub2c8\uc5b4, \uae08\ud615 \uc81c\uc791\uc790, \ud504\ub85c\uc81d\ud2b8 \uad00\ub9ac\uc790 \ubc0f \ud488\uc9c8 \ud300 \uac04\uc758 \uacf5\ud1b5 \uc5b8\uc5b4\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \ubaa8\ub450\uac00 \ub3d9\uc77c\ud55c SPI \ub4f1\uae09\uc744 \ucc38\uc870\ud560 \ub54c, \ud45c\uba74\uc774 \uc5b4\ub5bb\uac8c \ubcf4\uc5ec\uc57c \ud558\ub294\uc9c0, \uc5bc\ub9c8\ub098 \ub9ce\uc740 \uc5f0\ub9c8 \uc791\uc5c5\uc774 \ud544\uc694\ud55c\uc9c0, \uc5b4\ub5a4 \ube44\uc6a9\uacfc \ub9ac\ub4dc \ud0c0\uc784\uc744 \uc608\uc0c1\ud574\uc57c \ud558\ub294\uc9c0\uc5d0 \ub300\ud55c \ubaa8\ud638\ud568\uc774 \uc81c\uac70\ub429\ub2c8\ub2e4. SPI \uc2dc\uc2a4\ud15c\uc740 \ub610\ud55c OEM\uacfc \ud574\uc678 \uae08\ud615 \uc5c5\uccb4 \uac04\uc758 \uc758\uc0ac\uc18c\ud1b5 \uaca9\ucc28\ub97c \ud574\uc18c\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub418\uba70, \uadf8\ub807\uc9c0 \uc54a\uc73c\uba74 \ub2e4\ub978 \uc6a9\uc5b4\ub098 VDI 3400\uacfc \uac19\uc740 \uc9c0\uc5ed \ud45c\uc900\uc774 \ud63c\ub780\uc744 \uc57c\uae30\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\ud45c\uc900\uc740 \ub124 \uac00\uc9c0 \uc8fc\uc694 \ub4f1\uae09\uc73c\ub85c \ubd84\ub958\ub418\uba70, \uac01 \ub4f1\uae09\uc740 \ubab0\ub4dc \uacac\uc801\uc774 \ud655\uc815\ub418\uae30 \uc804\uc5d0 \uba85\ud655\ud55c \ucf54\uc2a4\uba54\ud2f1 \ubaa9\ud45c, \uac80\uc0ac \ubc29\ubc95, \uc218\uc9c0 \uc120\ud0dd \ubc0f \uae08\ud615 \uc608\uc0b0\uacfc \uc5f0\uacb0\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4:<\/p>\n<p><strong>Grade A (Gloss\/Diamond Polish):<\/strong> \uc2a4\ud06c\ub798\uce58\uc640 \uc2f1\ud06c \ub9c8\ud06c\uac00 \ub69c\ub837\ud558\uac8c \ubcf4\uc774\ub294 \uad11\ud559, \ud22c\uba85 \ub610\ub294 \uace0\uae09 \ucf54\uc2a4\uba54\ud2f1 \ubd80\ud488\uc6a9 \ubbf8\ub7ec \ub9c8\uac10.<\/p>\n<p><strong>Grade B (Semi-Gloss\/Paper):<\/strong> Smooth finish without high reflection.<\/p>\n<p><strong>Grade C (Matte\/Stone):<\/strong> Non-reflective, standard industrial finish.<\/p>\n<p><strong>Grade D (Textured\/Blast):<\/strong> Rough finish created via dry blasting or Electrical Discharge Machining (EDM).<\/p>\n<h2>What Are the Technical Parameters of SPI Finishes?<\/h2>\n<p>SPI \ub9c8\uac10\uc758 \uae30\uc220\uc801 \ub9e4\uac1c\ubcc0\uc218\ub294 \ud45c\uba74 \uac70\uce60\uae30(Ra), \uc5f0\ub9c8 \ubc29\ubc95, \ub4f1\uae09\ubcc4 \ucd5c\uc18c \ub4dc\ub798\ud504\ud2b8 \uac01\ub3c4\uc785\ub2c8\ub2e4.<\/p>\n<p>To ensure manufacturability, engineers must adhere to specific roughness averages (Ra) and draft angle requirements. The following table details the twelve primary SPI designations.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:1.5em 0;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">SPI Grade<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">Finish Description<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">Method of Application<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">Typical Ra (\u00b5m)<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">Typical Ra (\u00b5in)<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">Min. Draft Angle<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">Primary Use Case<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">A-1<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Super High Gloss<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Grade #3 Diamond Buff<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.012 \u2013 0.025<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0 \u2013 1<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">1\u00b0<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Lenses, mirrors, visors<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">A-2<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">High Gloss<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Grade #6 Diamond Buff<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.025 \u2013 0.05<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">1 \u2013 2<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">1\u00b0<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Cosmetic cases, electronics<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">A-3<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\ud14d\uc2a4\ucc98\ub4dc \/ \ubb34\uad11<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Grade #15 Diamond Buff<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.05 \u2013 0.10<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">2 \u2013 4<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">2\u00b0<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Household goods, opaque parts<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">B-1<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Smooth \/ Semi-Gloss<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">600 Grit Paper<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.05 \u2013 0.10<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">2 \u2013 3<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">1\u00b0<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Medium polish parts<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">B-2<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Smooth \/ Medium<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">400 Grit Paper<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.10 \u2013 0.15<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">4 \u2013 5<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">1\u00b0<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">General molding, paintable parts<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">B-3<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Smooth \/ Low Gloss<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">320 Grit Paper<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.28 \u2013 0.32<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">9 \u2013 10<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">2\u00b0<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Economy molding<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">C-1<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Matte \/ Fine<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">600 Grit Stone<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.35 \u2013 0.40<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">10 \u2013 12<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">1.5\u00b0<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Die cast look, internal parts<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">C-2<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Matte \/ Medium<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">400 Grit Stone<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.80 \u2013 0.95<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">25 \u2013 28<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">1.5\u00b0<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Structural parts, easy release<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">C-3<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Matte \/ Rough<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">320 Grit Stone<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">0.95 \u2013 1.10<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">38 \u2013 42<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">2\u00b0<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Heavy utility parts<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">D-1<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Textured \/ Satin<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Dry Blast (Glass Bead)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Varies<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Varies<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">2.5\u00b0+<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Satin finish handles<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">D-2<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Textured \/ Dull<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\uc644\uc131. \uc9c8\uac10\uc774 \ube5b \ubc18\uc0ac\ub97c \ubd84\uc0b0\uc2dc\ucf1c \uc2f1\ud06c \ub9c8\ud06c\uac00 \uc721\uc548\uc73c\ub85c \uac70\uc758 \ubcf4\uc774\uc9c0 \uc54a\uac8c \ub9cc\ub4ed\ub2c8\ub2e4.<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Varies<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Varies<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">3\u00b0+<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Industrial housing, grip<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">D-3<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Textured \/ Rough<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Dry Blast (#24 Oxide)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Varies<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Varies<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">3\u00b0+<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Heavy texture, defect hiding<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>\ucc38\uace0: <a href=\"https:\/\/en.wikipedia.org\/wiki\/Surface_roughness\">Ra(\ud3c9\uade0 \uac70\uce60\uae30)<\/a><sup id=\"fnref1:3\"><a href=\"#fn:3\" class=\"footnote-ref\">3<\/a><\/sup> \uac12\uc740 \uadfc\uc0ac\uce58\uc774\uba70 \uac15\uc885 \ubc0f \uce21\uc815 \uc7a5\ube44\uc5d0 \ub530\ub77c \ub2e4\ub985\ub2c8\ub2e4.<\/em><\/p>\n<h2>How Is the Polishing Process Executed Step-by-Step?<\/h2>\n<p>Achieving a specific SPI finish is a subtractive manufacturing process applied to the mold cavity steel.<\/p>\n<p><strong>Rough Machining:<\/strong> The mold core and cavity are CNC machined to the approximate shape. The surface is rough, often showing tool marks.<\/p>\n<p><strong>Stoning (Leveling):<\/strong> Toolmakers use abrasive stones to remove CNC tool marks and level the surface. This is the baseline for <strong>C-Grades<\/strong>.<\/p>\n<p><strong>Paper Polishing:<\/strong> If a smoother finish is required, the surface is sanded with progressively finer grit sandpaper (from 320 to 600 grit). This achieves <strong>B-Grades<\/strong>.<\/p>\n<div class=\"factory-insight\" style=\"background:#f0f7ff;border-left:4px solid #0066cc;padding:12px 16px;margin:1.5em 0;\"><strong>\ud83c\udfed ZetarMold Factory Insight<\/strong><br \/>\uacf5\uc7a5 \uc778\uc0ac\uc774\ud2b8: \uc0c1\ud558\uc774 \uae08\ud615 \uacf5\uc7a5\uc5d0\uc11c \uc6b0\ub9ac \ud300\uc740 SPI \ub9c8\uac10\uc744 \uc218\uc9c0 \uc120\ud0dd, \ub4dc\ub798\ud504\ud2b8 \uac01\ub3c4, \uc774\uc81d\ud130 \ubc30\uce58, \uac80\uc0ac \uc870\uba85\uacfc \ud568\uaed8 \ud655\uc778\ud569\ub2c8\ub2e4. \uc6b0\ub9ac \uc5d4\uc9c0\ub2c8\uc5b4\ub294 \uacac\uc801\uc744 \ub0b4\uae30 \uc804\uc5d0 400\uac1c \uc774\uc0c1\uc758 \ud50c\ub77c\uc2a4\ud2f1 \uc7ac\ub8cc \uc635\uc158\uacfc 47\ub300\uc758 \uc0ac\ucd9c \uc131\ud615\uae30\uc640 \ub9c8\uac10 \ubaa9\ud45c\ub97c \ube44\uad50\ud569\ub2c8\ub2e4. \ub610\ud55c \ud45c\uba74\uc774 \ub3c4\uc7a5, \ub808\uc774\uc800 \ub9c8\ud0b9, \uc0ac\uc6a9\uc790 \uc811\ucd09, \ud654\ud559 \ubb3c\uc9c8 \uccad\uc18c, \uac15\ud55c \uc870\uba85 \uc544\ub798 \uc2b9\uc778\ub420\uc9c0 \uc5ec\ubd80\ub97c \ubb3b\uc2b5\ub2c8\ub2e4. \uc65c\ub0d0\ud558\uba74 \uc774\ub7ec\ud55c \uc138\ubd80 \uc0ac\ud56d\uc774 \uac70\uc6b8 \uc5f0\ub9c8\uac00 \uac00\uce58\ub97c \ub354\ud558\ub294\uc9c0 \uc544\ub2c8\uba74 \ub2e8\uc9c0 \ube44\uc6a9\ub9cc \ucd94\uac00\ud558\ub294\uc9c0\ub97c \uacb0\uc815\ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/div>\n<p><strong>Diamond Buffing (Optional):<\/strong> For <strong>A-Grades<\/strong>, a diamond paste is applied to a rotary buffing tool. The steel is polished until it reaches optical reflectivity.<\/p>\n<figure style=\"text-align:center;margin:2em 0;\">\n<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-1.jpg\" alt=\"SPI \ub9c8\uac10\uc744 \uc704\ud55c \uae08\ud615 \ud3f4\ub9ac\uc2f1\" class=\"wp-image-53270 size-full\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-1.jpg 800w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-1-300x171.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-1-768x439.jpg 768w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-1-18x10.jpg 18w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-1-600x343.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption style=\"font-size:0.78em; color:#888; font-style:italic; margin-top:4px; text-align:center;\">SPI \uae08\ud615 \uc5f0\ub9c8 \uacf5\uc815<\/figcaption><\/figure>\n<h2>What Are the Pros and Cons of Each Grade Category?<\/h2>\n<p>SPI \ub4f1\uae09\uc758 \uc7a5\ub2e8\uc810\uc740 \ud45c\uba74 \uc5f0\ub9c8 \uc218\uc900, \uae08\ud615 \ube44\uc6a9, \uacb0\ud568 \uac00\uc2dc\uc131 \uac04\uc758 \uade0\ud615\uc73c\ub85c \uc815\uc758\ub429\ub2c8\ub2e4.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:1.5em 0;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">SPI Category<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">\uc7a5\uc810<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">\ub2e8\uc810<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Grade A (Gloss)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Highest aesthetic appeal; optical clarity for transparent parts; perceived high value.<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\uac00\uc7a5 \ub192\uc740 \uae08\ud615 \ube44\uc6a9; '\uc9c4\uacf5 \ubc00\ubd09' \uace0\ucc29 \uacbd\ud5a5; \ud45c\uba74 \uacb0\ud568(\uc2a4\ud06c\ub798\uce58, \uc9c0\ubb38, \uc2f1\ud06c \ub9c8\ud06c)\uc744 \ub450\ub4dc\ub7ec\uc9c0\uac8c \ud568.<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Grade B (Semi-Gloss)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Good balance of cost and aesthetics; suitable for painting or plating; removes machining marks.<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Can still show some molding defects; requires manual polishing labor.<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Grade C (Matte)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Low tooling cost (fastest to machine); excellent for part release; hides minor tool marks.<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u201c\ubbf8\uc644\uc131\u201d \ub610\ub294 \uc0b0\uc5c5\uc801\uc73c\ub85c \ubcf4\uc77c \uc218 \uc788\uc73c\uba70, \uace0\uae09 \uc18c\ube44\uc790\uc6a9 \ud45c\uba74\uc5d0\ub294 \uc801\ud569\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Grade D (Textured)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Excellent for hiding sink marks and flow lines; improves grip; durable surface appearance.<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\uccad\uc18c\uac00 \uac00\uc7a5 \uc5b4\ub824\uc6c0(\uc9c0\ubb38 \uc7a1\ud798); \uc9c8\uac10 \ud45c\uba74\uc5d0\ub294 \uc0c1\ub2f9\ud55c \ub4dc\ub798\ud504\ud2b8 \uac01\ub3c4 \ud544\uc694; \uae08\ud615\uc774 \uc190\uc0c1\ub418\uba74 \uc218\ub9ac \uc5b4\ub824\uc6c0.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"claim claim-true\" style=\"background-color: #eff7ef; border-color: #eff7ef; color: #5a8a5a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#16a34a\" stroke-width=\"2\"><path d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><b>\u201c\ud14d\uc2a4\ucc98 \ub9c8\uac10(SPI D-\uc2dc\ub9ac\uc988)\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \ubd80\ud488 \uace0\ucc29\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \ud3f4\ub9ac\uc2f1 \ub9c8\uac10\ubcf4\ub2e4 \ud14d\uc2a4\ucc98 \uae4a\uc774 \ub2e8\uc704\ub2f9 \ub354 \ud070 \ud14c\uc774\ud37c\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.\u201d<\/b><span class=\"claim-true-or-false\">True<\/span><\/p>\n<p class=\"claim-explanation\">\ud14d\uc2a4\ucc98\ub294 \ubbf8\uc138 \uc218\uc900\uc5d0\uc11c \uc5b8\ub354\ucef7\uc744 \uc0dd\uc131\ud569\ub2c8\ub2e4; \uc77c\ubc18 \uaddc\uce59\uc740 \ub4dc\ub798\uadf8 \ub9c8\ud06c\ub97c \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \ud14d\uc2a4\ucc98 \uae4a\uc774 0.001 \uc778\uce58\ub9c8\ub2e4 1.5\ub3c4\uc758 \ud14c\uc774\ud37c\uc785\ub2c8\ub2e4.<\/p>\n<\/div>\n<div class=\"claim claim-false\" style=\"background-color: #f7e8e8; border-color: #f7e8e8; color: #8a4a4a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#dc2626\" stroke-width=\"2\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\/><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\/><\/svg><b>\u201c\ub354 \ub192\uc740 SPI \ub9c8\uac10 \ub4f1\uae09(\uc608: A-1)\uc740 \ud56d\uc0c1 \uc81c\ud488 \uc774\ud615\uc744 \uac1c\uc120\ud569\ub2c8\ub2e4.\u201d<\/b><span class=\"claim-true-or-false\">False<\/span><\/p>\n<p class=\"claim-explanation\">Mirror finishes can actually create a vacuum seal effect between the part and the mold steel, causing parts to stick. This often requires air poppets or vacuum breakers to eject the part without deformation.<\/p>\n<\/div>\n<h2>\ud45c\uba74 \ub9c8\uac10 \uc120\ud0dd\uc744 \ucd5c\uc801\ud654\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub418\ub294 \uc2e4\uc6a9\uc801\uc778 \ud301\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/h2>\n<p><strong>\uc18c\uc7ac \ud638\ud658\uc131:<\/strong> \ubaa8\ub4e0 \uc218\uc9c0\uac00 \ubaa8\ub4e0 SPI \ub4f1\uae09\uc744 \uc7ac\ud604\ud560 \uc218 \uc788\ub294 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4. PC, PMMA, ABS\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uace0\uad11\ud0dd A\ub4f1\uae09 \ub9c8\uac10\uc744 \uc798 \uc720\uc9c0\ud558\uc9c0\ub9cc, PP, POM, \ub098\uc77c\ub860\uc740 \uc720\ub3d9 \ubc29\ud5a5\uc5d0 \ub530\ub77c \ub2e4\ub978 \uc9c8\uac10\uc744 \ubcf4\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc720\ub9ac \uc12c\uc720 \uac15\ud654 \ub4f1\uae09\uc740 \uac00\uc7a5 \uc5b4\ub824\uc6b4\ub370, \uc12c\uc720 \ud22c\uacfc \ud604\uc0c1\uc774 C-1 \uc774\uc0c1\uc5d0\uc11c \ub098\ud0c0\ub0a9\ub2c8\ub2e4. 30% \uc720\ub9ac \uc12c\uc720 \uac15\ud654 \ub098\uc77c\ub860\uc5d0 Class A \ud45c\uba74\uc744 \uc9c0\uc815\ud558\ub824\uba74, S136 \ub610\ub294 H13 \uac15\ucca0, \ucd94\uac00 \uc5f0\ub9c8, \ud604\uc2e4\uc801\uc778 \uc0d8\ud50c \uc2b9\uc778\uc5d0 \ub300\ud55c \uc608\uc0b0\uc744 \ucc45\uc815\ud558\uc138\uc694.<\/p>\n<p><strong>\uc2f1\ud06c \ub9c8\ud06c \uc804\ub7b5:<\/strong> \uc2f1\ud06c \ub9c8\ud06c\ub294 \uad11\ud0dd \uc788\ub294 A\ub4f1\uae09 \ud45c\uba74\uc5d0\uc11c \uac00\uc7a5 \uc798 \ubcf4\uc774\uba70, 0.05mm\uc758 \ud568\ubab0\ub3c4 \uac80\uc0ac \uc870\uba85 \uc544\ub798\uc5d0\uc11c \ub450\ub4dc\ub7ec\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubb34\uad11 C\ub4f1\uae09 \ub610\ub294 \uc9c8\uac10 D\ub4f1\uae09 \ud45c\uba74\uc5d0\uc11c\ub294 \uac19\uc740 \uc2f1\ud06c\uac00 \ud6e8\uc52c \ub35c \ub208\uc5d0 \ub755\ub2c8\ub2e4. A\ub4f1\uae09\uc740 \uad6c\ub9e4\uc790\uac00 \ubcf4\ub294 \ud45c\uba74\uc5d0\ub9cc \uc0ac\uc6a9\ud558\uace0, \ub9ac\ube0c, \ubcf4\uc2a4, \ubcbd \ub450\uaed8 \ubcc0\ud654\uac00 \uc788\ub294 \uc228\uaca8\uc9c4 \uba74\uc5d0\ub294 C \ub610\ub294 D\ub4f1\uae09\uc744 \uc0ac\uc6a9\ud558\uc138\uc694. \uc774 \ubd84\ud560 \ub4f1\uae09 \uc811\uadfc\ubc95\uc740 \uc778\uc9c0\ub41c \ud488\uc9c8\uc744 \uc720\uc9c0\ud558\uba74\uc11c \uc5f0\ub9c8 \ube44\uc6a9\uc744 30%\uc5d0\uc11c 50%\uae4c\uc9c0 \uc904\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p><strong>\ube44\uc6a9 \uad00\ub9ac:<\/strong> \ud3f4\ub9ac\uc2f1 \uc791\uc5c5\uc740 \uae08\ud615 \uc81c\uc870\uc5d0\uc11c \uc8fc\uc694 \ubcc0\ub3d9 \ube44\uc6a9\uc785\ub2c8\ub2e4. C-1\uc5d0\uc11c A-1\ub85c \uc774\ub3d9\ud558\uba74 \ub2e4\uc774\uc544\ubaac\ub4dc \ubc84\ud551\uc774 \ub290\ub9ac\uace0 \uc219\ub828\ub41c \uc791\uc5c5\uc774\ubbc0\ub85c \uae08\ud615 \ube44\uc6a9\uc5d0 15%\uc5d0\uc11c 30%\ub97c \ucd94\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uae4a\uc740 \ub9ac\ube0c, \uc5b8\ub354\ucef7, \ubcf5\uc7a1\ud55c \ud30c\ud305 \ub77c\uc778\uc740 \uadf8 \ubc30\uc218\ub97c \uc99d\uac00\uc2dc\ud0b5\ub2c8\ub2e4. \ud30c\ud2b8\ub97c \ub4f1\uae09\ubcc4\ub85c \ub9e4\ud551\ud558\uc138\uc694: \uc8fc\uc694 \uc678\uad00 \uba74\uc740 A \ub4f1\uae09, \ubcf4\uc870 \ud45c\uba74\uc740 B \ub4f1\uae09, \uc228\uaca8\uc9c4 \uba74\uc740 C \ub610\ub294 D \ub4f1\uae09\uc785\ub2c8\ub2e4. \uc774\ub807\uac8c \ud558\uba74 \uae08\ud615\uc774 \uacbd\uc7c1\ub825\uc744 \uc720\uc9c0\ud558\uace0 \uc0dd\uc0b0 \uc911 \uc720\uc9c0\ubcf4\uc218 \uc704\ud5d8\uc744 \uc904\uc785\ub2c8\ub2e4.<\/p>\n<figure style=\"text-align:center;margin:2em 0;\">\n<img decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/plastic-part-surface-finish-guide.webp\" alt=\"\ud50c\ub77c\uc2a4\ud2f1 \ubd80\ud488 \ud45c\uba74 \ub9c8\uac10 \uac00\uc774\ub4dc\" class=\"wp-image-51634 size-full\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/plastic-part-surface-finish-guide.webp 800w, https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/plastic-part-surface-finish-guide-300x171.webp 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/plastic-part-surface-finish-guide-768x439.webp 768w, https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/plastic-part-surface-finish-guide-18x10.webp 18w, https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/plastic-part-surface-finish-guide-600x343.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption style=\"font-size:0.78em; color:#888; font-style:italic; margin-top:4px; text-align:center;\">SPI \ub9c8\uac10 \ub4f1\uae09 \ube44\uad50<\/figcaption><\/figure>\n<h2>What Are Common Application Scenarios?<\/h2>\n<p>\uc77c\ubc18\uc801\uc778 SPI \uc801\uc6a9 \uc2dc\ub098\ub9ac\uc624\ub294 \uc81c\ud488 \uc720\ud615\uc5d0 \ub9de\ucdb0\uc9d1\ub2c8\ub2e4: \uad11\ud559 \ub80c\uc988\ub294 A-1, \uc18c\ube44\uc790 \ud558\uc6b0\uc9d5\uc740 B-1, \uacf5\uad6c \uadf8\ub9bd\uc740 D-2\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n<p><strong>SPI A-1 (Diamond #1):<\/strong> \uc790\ub3d9\ucc28 \ud5e4\ub4dc\ub77c\uc774\ud2b8 \ub80c\uc988, \uad11\ud559 \ud504\ub9ac\uc998, \uc758\ub8cc\uc6a9 \ud53c\ud3ab, \uadf8\ub9ac\uace0 \uc644\ubcbd\ud55c \ud22c\uba85\ub3c4\uac00 \uc8fc\uc694 \ud310\ub9e4 \ud3ec\uc778\ud2b8\uc778 \uace0\uae09 \ud654\uc7a5\ud488 \ud3ec\uc7a5\uc5d0 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc5b4\ub5a4 \ud45c\uba74 \uacb0\ud568, \ubbf8\uc138 \uc2a4\ud06c\ub798\uce58, \uc720\ub3d9\uc120\ub3c4 \uc9c1\uc811 \uc870\uba85 \uc544\ub798\uc5d0\uc11c \uc989\uc2dc \ubcf4\uc774\ubbc0\ub85c, \ucd5c\uace0 \ub4f1\uae09\uc758 \uac15\ucca0 \uc5f0\ub9c8\uc640 \uc138\uc2ec\ud55c \uacf5\uc815 \uad00\ub9ac\ub9cc\uc774 \uc774 \ub9c8\uac10\uc744 \uc77c\uad00\ub418\uac8c \ub2ec\uc131\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. A-1\uc740 \ub610\ud55c \ud45c\uba74 \uac70\uce60\uae30\uac00 \uc624\uc5fc\ubb3c\uc744 \uc7a1\uac70\ub098 \uc720\uccb4 \uc5ed\ud559\uc5d0 \uc601\ud5a5\uc744 \uc904 \uc218 \uc788\ub294 \uc758\ub8cc \uae30\uae30 \ucc3d\ubb38 \ubc0f \uc720\uccb4 \uacbd\ub85c \ubd80\ud488\uc5d0 \uc9c0\uc815\ub429\ub2c8\ub2e4.<\/p>\n<p><strong>SPI A-2 (Diamond #2):<\/strong> \uc2a4\ub9c8\ud2b8\ud3f0 \ud654\uba74, \uace0\uae09 \uc678\uad00 \ucef4\ud329\ud2b8, \uc790\ub3d9\ucc28 \ub0b4\ubd80 \ud2b8\ub9bc, \uadf8\ub9ac\uace0 \uc2dc\uac01\uc801 \ub9e4\ub825\uc774 \uc81c\ud488 \ud488\uc9c8 \uc778\uc2dd\uc5d0 \uc9c1\uc811 \uc601\ud5a5\uc744 \ubbf8\uce58\ub294 \uace0\uae09 \uc18c\ube44\uc790 \uc81c\ud488 \uc678\uc7a5. A-2\ub294 A-1\ubcf4\ub2e4 \ub3c4\uad6c \ub9c8\ud06c\uc5d0 \uc57d\uac04 \ub354 \ub9ce\uc740 \ud5c8\uc6a9 \uc624\ucc28\ub97c \uac00\uc9c4 \uac70\uc6b8 \uac19\uc740 \ubc18\uc0ac\uc131\uc744 \uc81c\uacf5\ud558\uc5ec \uacbd\uc7c1\uc801\uc778 \ud310\ub9e4 \ud658\uacbd\uc5d0\uc11c \uc5ec\uc804\ud788 \ud3f4\ub9ac\uc2f1\ub41c \uc804\ubb38\uc801\uc778 \uc678\uad00\uc744 \uc694\uad6c\ud558\ub294 \ubcf4\uc774\ub294 \ud45c\uba74\uc5d0 \uc2e4\uc6a9\uc801\uc778 \uc120\ud0dd\uc785\ub2c8\ub2e4. \uc18c\ube44\uc790 \uc804\uc790 \uc81c\ud488 \uc81c\uc870\uc5c5\uccb4\ub294 A-1 \ub3c4\uad6c \ube44\uc6a9\uc744 \ubc1c\uc0dd\uc2dc\ud0a4\uc9c0 \uc54a\uace0 \uace0\uae09\uc73c\ub85c \ubcf4\uc5ec\uc57c \ud558\ub294 \ub514\uc2a4\ud50c\ub808\uc774 \ubca0\uc824\uacfc \ucee8\ud2b8\ub864 \ud328\ub110\uc5d0 \uc790\uc8fc A-2\ub97c \uc120\ud0dd\ud569\ub2c8\ub2e4.<\/p>\n<h3>\uc9c8\uac10 \ubc0f \uc0b0\uc5c5\uc6a9 \ub9c8\uac10 \uc0ac\uc6a9 \uc2dc\uae30<\/h3>\n<p><strong>SPI B-1 (Paper #1):<\/strong> \ud0a4\ubcf4\ub4dc \ud0a4, \ub3c4\uc7a5 \uc608\uc815\uc778 \ud558\uc6b0\uc9d5, \uc18c\ube44\uc790 \uc804\uc790 \uc81c\ud488 \ucf00\uc774\uc2a4, \uac00\uc804 \uc81c\ud488 \ucee4\ubc84\uc5d0 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. B\ub4f1\uae09 \ub9c8\uac10\uc740 \ub2e4\uc774\uc544\ubaac\ub4dc \uc5f0\ub9c8 \ube44\uc6a9 \uc5c6\uc774 \ub3c4\uc7a5, \uc778\uc1c4, \uc9c8\uac10 \ucf54\ud305 \uc801\uc6a9\uacfc \uac19\uc740 \uc131\ud615 \ud6c4 \uc791\uc5c5\uc5d0 \ucda9\ubd84\ud55c \ub9e4\ub044\ub7ec\uc6c0\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc6b0\ub9ac \uacbd\ud5d8\uc0c1, B-1\uc740 \ubd80\ud488\uc774 \uc131\ud615 \ud6c4 \uc774\ucc28 \ud45c\uba74 \ucc98\ub9ac\ub97c \ubc1b\uc744 \ub54c \uac00\uc7a5 \ube44\uc6a9 \ud6a8\uc728\uc801\uc778 \ub4f1\uae09\uc785\ub2c8\ub2e4. \uc774 \ub4f1\uae09\uc740 \ub610\ud55c \uc870\ub9bd \uc801\ud569\uc131\uc744 \uc704\ud55c \uae68\ub057\ud558\uace0 \uc77c\uad00\ub41c \ud45c\uba74\uc774 \uc5ec\uc804\ud788 \ud544\uc694\ud55c \ub0b4\ubd80 \uad6c\uc870 \ube0c\ub798\ud0b7 \ubc0f \uc228\uaca8\uc9c4 \ubd80\ud488\uc5d0 \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n<p><strong>SPI C-3 \ubc0f D \ub4f1\uae09:<\/strong> \uc804\ub3d9 \uacf5\uad6c \uc190\uc7a1\uc774, \uc2a4\ud2f0\uc5b4\ub9c1 \uceec\ub7fc \ucee4\ubc84, \ub0b4\uad6c\uc131 \uac15\ud654\ub41c \ub178\ud2b8\ubd81 \ucf00\uc774\uc2a4, \uc57c\uc678 \uc7a5\ube44 \uc678\ud568, \uadf8\ub9ac\uace0 \uad11\ud0dd\ubcf4\ub2e4\ub294 \uadf8\ub9bd\uac10, \ub0b4\uad6c\uc131, \uac00\uacf5 \ud754\uc801\uc758 \uc2dc\uac01\uc801 \uc740\ud3d0\uac00 \uc911\uc694\ud55c \ubaa8\ub4e0 \uc751\uc6a9 \ubd84\uc57c\uc5d0 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc9c8\uac10\uc774 \uc788\ub294 D\ub4f1\uae09 \ub9c8\uac10\uc740 \ud2b9\ud788 \uc2f1\ud06c \ub9c8\ud06c, \uc6a9\uc811\uc120, \uc720\ub3d9 \ud754\uc801\uc744 \uc228\uae30\ub294 \ub370 \ud6a8\uacfc\uc801\uc774\uba70, \uc774\ub294 \uad11\ud0dd \ud45c\uba74\uc5d0\uc11c\ub294 \ub208\uc5d0 \ub744\uac8c \ubcf4\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub798\uc11c \uad6c\uc870\uc801 \ubc0f \uc0b0\uc5c5\uc6a9 \ubd80\ud488\uc758 \uae30\ubcf8 \uc120\ud0dd\uc73c\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n<h2>SPI \ub9c8\uac10\uc744 \ub2e8\uacc4\ubcc4\ub85c \uc62c\ubc14\ub974\uac8c \uc120\ud0dd\ud558\ub294 \ubc29\ubc95\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/h2>\n<p>\uc62c\ubc14\ub978 SPI \ub9c8\uac10\uc744 \uc120\ud0dd\ud558\ub294 \uac83\uc740 5\ub2e8\uacc4 \uacfc\uc815\uc785\ub2c8\ub2e4: \uae30\ub2a5 \uc815\uc758, \ud3f4\ub9ac\uba38 \ud655\uc778, \ud14c\uc774\ud37c \uac80\ud1a0, \uc608\uc0b0 \uc124\uc815, \uadf8\ub7f0 \ub2e4\uc74c \uc131\ud615\uc5c5\uccb4\uc640 \uc0c1\ub2f4\ud558\uc138\uc694.<\/p>\n<figure style=\"text-align:center;margin:2em 0;\">\n<img decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/spi-mold-finish-guide.webp\" alt=\"SPI \ud53c\ub2c8\uc2dc \uc120\ud0dd \uac00\uc774\ub4dc\" class=\"wp-image-51633 size-full\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/spi-mold-finish-guide.webp 800w, https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/spi-mold-finish-guide-300x171.webp 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/spi-mold-finish-guide-768x439.webp 768w, https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/spi-mold-finish-guide-18x10.webp 18w, https:\/\/zetarmold.com\/wp-content\/uploads\/2025\/12\/spi-mold-finish-guide-600x343.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption style=\"font-size:0.78em; color:#888; font-style:italic; margin-top:4px; text-align:center;\">SPI \ud53c\ub2c8\uc2dc \uc120\ud0dd \uac00\uc774\ub4dc<\/figcaption><\/figure>\n<p><strong>Define Functionality:<\/strong> \ud30c\ud2b8\uac00 \ud22c\uba85\ud574\uc57c \ud560\uae4c\uc694? (A \uc120\ud0dd). \uadf8\ub9bd\uc774\ub098 \ucd09\uac10 \ud45c\uba74\uc774 \ud544\uc694\ud560\uae4c\uc694? (D \uc120\ud0dd). \ucd5c\uc18c \ub4dc\ub798\ud504\ud2b8\ub85c \uae08\ud615\uc5d0\uc11c \uc27d\uac8c \ucd9c\uc2dc\ud574\uc57c \ud560\uae4c\uc694? (C \uc120\ud0dd). \ubaa8\ub4e0 SPI \uc120\ud0dd\uc740 \uae30\ub2a5\uc801 \uc694\uad6c \uc0ac\ud56d\uc744 \uae30\ub85d\ud558\ub294 \uac83\uc73c\ub85c \uc2dc\uc791\ud558\uc138\uc694 \u2014 \uc678\uad00 \uc120\ud638\ub3c4\ub294 \uc544\ub2d9\ub2c8\ub2e4. \ub9ce\uc740 \uacbd\uc6b0, \uc678\uad00 \ubaa9\ud45c\ub294 \uae30\ub2a5\uc801 \ud544\uc694\uc640 \ucda9\ub3cc\ud558\uba70, \uadf8 \uac08\ub4f1\uc744 \ub354 \uc77c\ucc0d \ub4dc\ub7ec\ub0b4\uba74 \uae08\ud615 \ud30c\ud2b8\ub108\uc640 \ub354 \ube60\ub974\uac8c \ud574\uacb0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p><strong>Check the Polymer:<\/strong> \uc7ac\ub8cc\uac00 \ubb34\ucda9\uc804\uc778\uac00\uc694, \uc720\ub9ac \uc12c\uc720 \uac15\ud654\uc778\uac00\uc694? \uc720\ub9ac \uc12c\uc720 \uac15\ud654\ub77c\uba74, \ud45c\uba74\uc758 \uc12c\uc720 \ubc30\ud5a5\uc774 \ubcf4\uc774\ub294 \uc904\ubb34\ub2ac\ub97c \ub9cc\ub4e4\uc5b4 \uc5b4\ub5a4 \uc5f0\ub9c8\ub85c\ub3c4 \uc81c\uac70\ud560 \uc218 \uc5c6\uc73c\ubbc0\ub85c \uae30\ub300\uce58\ub97c B-3 \ub610\ub294 C-1\ub85c \uc81c\ud55c\ud558\uc138\uc694. \uc218\uc9c0 \ub4f1\uae09, \ucda9\uc804\uc7ac \ube44\uc728, \uc0c9\uc0c1, \uad11\ud0dd \ubaa9\ud45c, \uc0d8\ud50c \uc2a4\uc640\uce58\ub97c SPI \uc0ac\uc591 \ubb38\uc11c\uc5d0 \uae30\ub85d\ud558\uc5ec \uad6c\ub9e4\uc790\uc640 \uc131\ud615\uc5c5\uccb4 \uac04\uc5d0 \ubaa8\ud638\ud568\uc774 \uc5c6\ub3c4\ub85d \ud558\uc138\uc694.<\/p>\n<p><strong>\ud14c\uc774\ud37c \uc694\uad6c\uc0ac\ud56d \uac80\ud1a0:<\/strong> CAD \ubaa8\ub378\uc744 \ud655\uc778\ud558\uc138\uc694. \uc218\uc9c1 \ubcbd\uc5d0 0\ub3c4 \ub610\ub294 0.5\ub3c4\uc758 \ud14c\uc774\ud37c\uac00 \uc788\ub2e4\uba74, \uac70\uce5c \ud45c\uba74\uc774 \uc774\uc81d\uc158 \uc911 \ub9c8\ucc30\uc744 \uc99d\uac00\uc2dc\ucf1c \ubd80\ud488\uc774 \ub2ec\ub77c\ubd99\uac70\ub098 \ub4a4\ud2c0\ub9b4 \uc218 \uc788\uc73c\ubbc0\ub85c \uc9c8\uac10(D\ub4f1\uae09)\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uc9c8\uac10 \ub9c8\uac10\uc5d0\ub294 \ucd5c\uc18c 1~3\ub3c4\uc758 \ub4dc\ub798\ud504\ud2b8\ub97c \ucd94\uac00\ud558\uac70\ub098, \ub354 \ub0ae\uc740 \ub4dc\ub798\ud504\ud2b8 \uac01\ub3c4\ub97c \ud5c8\uc6a9\ud558\ub294 \uc5f0\ub9c8 \ub9c8\uac10\uc73c\ub85c \uc804\ud658\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<p><strong>Determine Budget:<\/strong> \ube44\uc6a9\uc774 \uc8fc\uc694 \uace0\ub824\uc0ac\ud56d\uc774\ub77c\uba74 SPI C-1\uc744 \uc9c0\uc815\ud558\uc138\uc694. \uc774\ub294 \ucd5c\uc18c\ud55c\uc758 \ud6c4\ucc98\ub9ac\uac00 \ud544\uc694\ud55c \ud45c\uc900 \uae30\uacc4 \uac00\uacf5 \ub9c8\uac10\uc774\uba70 \ud45c\uc900 P20 \uacf5\uad6c\uac15\uc5d0\uc11c \ub2ec\uc131 \uac00\ub2a5\ud569\ub2c8\ub2e4. C-1\uc5d0\uc11c A-2\ub85c \uc5c5\uadf8\ub808\uc774\ub4dc\ud558\uba74 \ucd94\uac00 \uc5f0\ub9c8 \uc2dc\uac04\uc73c\ub85c \uc778\ud574 \uae08\ud615 \ube44\uc6a9\uc774 20%\uc5d0\uc11c 40%\uae4c\uc9c0 \uc99d\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud56d\uc0c1 \uae30\ubcf8 \ub9c8\uac10 \uc218\uc900\uc774 \uc544\ub2cc \uc815\ud655\ud55c SPI \ub4f1\uae09\uc774 \uc9c0\uc815\ub41c \uae08\ud615 \uacac\uc801\uc744 \ubc1b\uc73c\uc138\uc694.<\/p>\n<p><strong>Consult the Molder:<\/strong> \ucd5c\uc885 \uacb0\uc815 \uc804, \uc120\ud0dd\ud55c \ub9c8\uac10\uc774 H13 \ub300 P20\uc640 \uac19\uc740 \ud2b9\uc815 \uae08\ud615\uac15\uc744 \ud544\uc694\ub85c \ud558\ub294\uc9c0 \uc0ac\ucd9c \uc131\ud615\uc5c5\uccb4\uc5d0 \ubb38\uc758\ud558\uc2ed\uc2dc\uc624. \uc774\ub294 \ub9ac\ub4dc \ud0c0\uc784\uacfc \ube44\uc6a9\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce60 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uacbd\ud5d8 \uc788\ub294 \uc131\ud615\uc5c5\uccb4\ub294 \ub610\ud55c \ud574\ub2f9 \ub9c8\uac10\uc774 \uc120\ud0dd\ub41c \uc218\uc9c0\uc640 \uc798 \uc0c1\ud638\uc791\uc6a9\ud560\uc9c0, \uc774\uc81d\ud130 \ud540 \uc790\uad6d\uc774 \ubaa9\ud45c \ub9c8\uac10 \uc218\uc900\uc5d0\uc11c \ubcf4\uc77c\uc9c0, \uadf8\ub9ac\uace0 \ud398\uc778\ud305\uc774\ub098 \ud14d\uc2a4\ucc98\ub9c1 \uc624\ubc84\ub808\uc774\uc640 \uac19\uc740 2\ucc28 \uc791\uc5c5\uc774 \uae30\ubcf8 SPI \ub4f1\uae09\uacfc \ud638\ud658\ub418\ub294\uc9c0\uc5d0 \ub300\ud574\uc11c\ub3c4 \uc870\uc5b8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<figure style=\"text-align:center;margin:2em 0;\">\n<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"457\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-2.jpg\" alt=\"SPI \ub9c8\uac10 \uae08\ud615 \ud3f4\ub9ac\uc2f1\" class=\"wp-image-53271 size-full\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-2.jpg 800w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-2-300x171.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-2-768x439.jpg 768w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-2-18x10.jpg 18w, https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/04\/injection-mold-polishing-800x457-2-600x343.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption style=\"font-size:0.78em; color:#888; font-style:italic; margin-top:4px; text-align:center;\">SPI \uae08\ud615 \ud3f4\ub9ac\uc2f1 \uc791\uc5c5<\/figcaption><\/figure>\n<div class=\"claim claim-true\" style=\"background-color: #eff7ef; border-color: #eff7ef; color: #5a8a5a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#16a34a\" stroke-width=\"2\"><path d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><b>\u201cSPI \ub9c8\uac10 \uc120\ud0dd\uc740 \ucd5c\uc885 \uae08\ud615\uac15 \ud3f4\ub9ac\uc2f1 \uc804\uc5d0 \ud655\uc815\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.\u201d<\/b><span class=\"claim-true-or-false\">True<\/span><\/p>\n<p class=\"claim-explanation\">\ub9c8\uac10 \ubcc0\uacbd\uc774 \ub2a6\uc5b4\uc9c0\uba74 \uc7ac\ud3f4\ub9ac\uc2f1, \uc7ac\ud14d\uc2a4\ucc98\ub9c1, \ucd94\uac00 \ub4dc\ub798\ud504\ud2b8 \uac80\ud1a0 \ubc0f \ucd94\uac00 \uc0d8\ud50c\ub9c1 \uc2dc\uac04\uc774 \ud544\uc694\ud560 \uc218 \uc788\uc73c\uba70, \ud2b9\ud788 \ubb34\uad11\uc5d0\uc11c \uace0\uad11\ud0dd \ud45c\uba74\uc73c\ub85c \uc774\ub3d9\ud560 \ub54c \ub354\uc6b1 \uadf8\ub807\uc2b5\ub2c8\ub2e4.<\/p>\n<\/div>\n<div class=\"claim claim-false\" style=\"background-color: #f7e8e8; border-color: #f7e8e8; color: #8a4a4a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#dc2626\" stroke-width=\"2\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\/><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\/><\/svg><b>\u201c\ubaa8\ub4e0 SPI \ud45c\uba74 \ub9c8\uac10\uc740 \ub3d9\uc77c\ud55c \uae08\ud615 \uc774\ud615 \ud14c\uc774\ud37c \ubc0f \uc774\uc81d\uc158 \uc124\uc815\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.\u201d<\/b><span class=\"claim-true-or-false\">False<\/span><\/p>\n<p class=\"claim-explanation\">\uad11\ud0dd, \ubb34\uad11 \ubc0f \ud14d\uc2a4\ucc98 \ub9c8\uac10\uc740 \uc774\uc81d\uc158 \uc2dc \ub2e4\ub974\uac8c \uc791\uc6a9\ud558\ubbc0\ub85c \ud14c\uc774\ud37c, \ud3f4\ub9ac\uc2f1 \ubc29\ud5a5, \uc218\uc9c0 \uc218\ucd95\ub960 \ubc0f \uc774\uc81d\uc158 \ud798\uc744 \ud568\uaed8 \uac80\ud1a0\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<\/div>\n<h2>\uad6c\ub9e4\uc790\uac00 \ubb3b\ub294 SPI \ud53c\ub2c8\uc2dc FAQ\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/h2>\n<h3>SPI\uc640 VDI 3400 \ud45c\uc900\uc758 \ucc28\uc774\uc810\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n<p>SPI\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ubd81\ubbf8 \uc0ac\ucd9c \uc131\ud615 \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \ubc18\uba74, VDI 3400\uc740 \uc720\ub7fd \uae08\ud615 \ucee4\ubba4\ub2c8\ucf00\uc774\uc158\uc5d0\uc11c \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ub458 \ub2e4 \ud45c\uba74 \uc9c8\uac10\uc744 \uc124\uba85\ud558\uc9c0\ub9cc, \uce21\uc815 \ubc29\ubc95\uacfc \uc9c8\uac10 \uacc4\uc5f4\uc774 \ub2e4\ub974\uae30 \ub54c\ubb38\uc5d0 \uc644\ubcbd\ud558\uac8c \ub9e4\ud551\ub418\uc9c0\ub294 \uc54a\uc2b5\ub2c8\ub2e4. \ub3c4\uba74\uc5d0 \ud55c \ud45c\uc900\uc774 \uae30\uc7ac\ub418\uc5b4 \uc788\uace0 \uacf5\uae09\uc5c5\uccb4\uac00 \ub2e4\ub978 \ud45c\uc900\uc744 \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0, \ubcc0\ud658\ud45c, \uc9c8\uac10 \ud50c\ub77c\ud06c \ub610\ub294 \uc2b9\uc778\ub41c \uc0d8\ud50c\uc744 \uc694\uccad\ud558\uc2ed\uc2dc\uc624. \uc774\ub807\uac8c \ud558\uba74 \uc0dd\uc0b0 \uc2b9\uc778 \uacfc\uc815\uc5d0\uc11c \ub3d9\uc77c\ud55c \ud45c\uba74\uc774 \uc124\uacc4\uc790, \uae08\ud615 \uc81c\uc791\uc790, \ucd5c\uc885 \uac80\uc0ac\uc790 \ubc0f \uad6c\ub9e4\uc790\uc5d0 \uc758\ud574 \ub2e4\ub974\uac8c \ud574\uc11d\ub418\ub294 \uc0c1\ud669\uc744 \ud53c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>\uae08\ud615 \uc81c\uc791 \ud6c4 \ud45c\uba74 \ub9c8\uac10\uc744 \ubcc0\uacbd\ud560 \uc218 \uc788\ub098\uc694?<\/h3>\n<p>\uac00\ub2a5\ud55c \uacbd\uc6b0\ub3c4 \uc788\uc9c0\ub9cc, \ubcc0\uacbd \ubc29\ud5a5\uc774 \uc0c1\ub2f9\ud788 \uc911\uc694\ud569\ub2c8\ub2e4. \ud3f4\ub9ac\uc2f1\ub41c \ud45c\uba74\uc5d0\uc11c \ub354 \uac70\uce5c \ud14d\uc2a4\ucc98\ub85c \uc774\ub3d9\ud558\ub294 \uac83\uc740 \ud3f4\ub9ac\uc2f1 \ud6c4 \uacf5\uad6c\ub97c \uc0cc\ub4dc\ube14\ub77c\uc2a4, \uc5d0\uce6d \ub610\ub294 \ud14d\uc2a4\ucc98\ub9c1\ud560 \uc218 \uc788\uae30 \ub54c\ubb38\uc5d0 \uc885\uc885 \uac00\ub2a5\ud569\ub2c8\ub2e4. \uac70\uce5c \ud45c\uba74\uc774\ub098 EDM \ud45c\uba74\uc5d0\uc11c \uace0\uad11\ud0dd \ub9c8\uac10\uc73c\ub85c \ub3cc\uc544\uac00\ub294 \uac83\uc740 \uac15\ucca0\uc744 \uc81c\uac70\ud558\uace0 \uc7ac\ud3f4\ub9ac\uc2f1\ud574\uc57c \ud558\ubbc0\ub85c \uce58\uba85\uc801\uc778 \uce58\uc218\ub97c \ubcc0\uacbd\ud560 \uc218 \uc788\uc5b4 \ud6e8\uc52c \ub354 \uc5b4\ub835\uc2b5\ub2c8\ub2e4. \uae4a\uc740 \ub9ac\ube0c, \uc167\uc624\ud504 \ubc0f \ud14d\uc2a4\ucc98\ub9c1\ub41c \uc218\uc9c1 \ubcbd\uc740 \ucd94\uac00 \ub4dc\ub798\ud504\ud2b8 \uac80\ud1a0\uc640 \uc0d8\ud50c\ub9c1\uc774 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\uac83\uc774 \ubc14\ub85c \ube44\uc6a9\uc774 \ub9ce\uc774 \ub4dc\ub294 \uc7ac\uc791\uc5c5\uacfc \uc9c0\uc5f0\uc744 \ud53c\ud558\uae30 \uc704\ud574 \ucd5c\uc885 \ub9c8\uac10 \uc758\ub3c4\ub294 \uccab \uc0d8\ud50c\ub9c1 \ud6c4\uac00 \uc544\ub2c8\ub77c DFM \uc911\uc5d0 \ud655\uc815\ub418\uc5b4\uc57c \ud558\ub294 \uc774\uc720\uc785\ub2c8\ub2e4.<\/p>\n<h3>\ud45c\uba74 \ub9c8\uac10\uc740 \uc0ac\uc774\ud074 \ud0c0\uc784\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce58\ub098\uc694?<\/h3>\n<p>\uc608. \uace0\uad11\ud0dd \ub9c8\uac10\uc740 \ub4dc\ub798\uadf8 \ub9c8\ud06c\ub098 \uc678\uad00\uc0c1 \uc2a4\ud2b8\ub808\uc2a4\ub97c \ud53c\ud558\uae30 \uc704\ud574 \ub354 \uc2e0\uc911\ud55c \ub0c9\uac01, \ub290\ub9b0 \uc774\uc81d\uc158, \ub354 \ub098\uc740 \ubc30\uae30\uac00 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud14d\uc2a4\ucc98 \ub9c8\uac10\uc740 \ub4dc\ub798\ud504\ud2b8\uac00 \ub108\ubb34 \ub0ae\uc744 \uacbd\uc6b0 \ubd80\ud488 \uace0\ucc29\uc744 \uc99d\uac00\uc2dc\ucf1c \uc774\uc81d\uc158\uc744 \ub290\ub9ac\uac8c \ud558\uac70\ub098 \uae01\ud798\uc744 \uc720\ubc1c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud45c\uba74 \ub9c8\uac10\uc740 \ub610\ud55c \uc678\uad00 \uacb0\ud568\uc774 \uad11\ud0dd \ubd80\ud488\uc5d0\uc11c \ub354 \uc27d\uac8c \ubcf4\uc774\uae30 \ub54c\ubb38\uc5d0 \uac80\uc0ac \uae30\uc900\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. \uc0dd\uc0b0 \uacc4\ud68d\uc744 \uc704\ud574 \uc5d4\uc9c0\ub2c8\uc5b4\ub294 \uc0d8\ud50c\ub9c1 \uc804\uc5d0 \ub9c8\uac10, \uc218\uc9c0, \ub4dc\ub798\ud504\ud2b8 \uac01\ub3c4, \uc774\uc81d\uc158 \ub808\uc774\uc544\uc6c3, \ud5c8\uc6a9 \uacb0\ud568 \uae30\uc900, \uc608\uc0c1 \ucde8\uae09 \uc790\uad6d \ubc0f \uc0ac\uc774\ud074 \ud0c0\uc784 \ubaa9\ud45c\ub97c \ud568\uaed8 \uac80\ud1a0\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<h3>\ub3c4\uc7a5\ub41c \ud50c\ub77c\uc2a4\ud2f1 \ubd80\ud488\uc5d0 \uac00\uc7a5 \uc801\ud569\ud55c SPI \ub9c8\uac10\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n<p>SPI B-1 \ub610\ub294 B-2\ub294 \ub3c4\uc7a5\ub41c \ud50c\ub77c\uc2a4\ud2f1 \ubd80\ud488\uc5d0 \ub300\ud55c \uc2e4\uc6a9\uc801\uc778 \ucd9c\ubc1c\uc810\uc774 \ub418\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4. \ud45c\uba74\uc774 \ucf54\ud305 \uc811\ucc29\uc5d0 \ucda9\ubd84\ud788 \ub9e4\ub044\ub7fd\uc9c0\ub9cc \ubbf8\ub7ec \ub4f1\uae09 A \ub9c8\uac10\ub9cc\ud07c \ube44\uc2f8\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uc815\ud655\ud55c \uc120\ud0dd\uc740 \ud398\uc778\ud2b8 \uc2dc\uc2a4\ud15c, \uc218\uc9c0 \uc720\ud615, \ud504\ub77c\uc774\uba38 \ud638\ud658\uc131, \uc608\uc0c1 \uad11\ud0dd \uc218\uc900 \ubc0f \ubd80\ud488 \ub3c4\uc7a5 \uc804 \uc5f0\ub9c8 \uc5ec\ubd80\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4. \ub9e4\uc6b0 \uac70\uce5c \ud45c\uba74\uc740 \ud398\uc778\ud2b8 \uc544\ub798\ub85c \uc9c8\uac10\uc774 \ube44\uce60 \uc218 \uc788\uc73c\uba70, \uc9c0\ub098\uce58\uac8c \uad11\ud0dd \uc788\ub294 \ud45c\uba74\uc740 \ud504\ub77c\uc774\uba38 \uc811\ucc29\ub825\uc744 \uc800\ud558\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud2b9\ud788 \ub2e4\uc911 \ucf54\ud305 \ub610\ub294 \uae08\uc18d\uc131 \ub9c8\uac10\uc758 \uacbd\uc6b0, \ub300\ub7c9 \uc0dd\uc0b0\uc744 \ud655\uc815\ud558\uae30 \uc804\uc5d0 \ud56d\uc0c1 \uc0d8\ud50c \ubd80\ud488\uc73c\ub85c \ucf54\ud305 \uacf5\uc815\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n<h3>\uae08\ud615 \uac15\uc7ac\uac00 \ucd5c\uc885 SPI \ub9c8\uac10\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce58\ub098\uc694?<\/h3>\n<p>\ubb3c\ub860\uc785\ub2c8\ub2e4. \ubaa8\ub4e0 \uac15\uc885\uc5d0\uc11c \ubaa8\ub4e0 \ub9c8\uac10\uc744 \ub2ec\uc131\ud560 \uc218\ub294 \uc5c6\uc2b5\ub2c8\ub2e4. \ubbf8\ub7ec \ub9c8\uac10\uc740 \uc77c\ubc18\uc801\uc73c\ub85c H13 \ub610\ub294 S136\uacfc \uac19\uc740 \uace0\ud488\uc9c8 \uacf5\uad6c\uac15\uacfc \uc138\uc2ec\ud55c \ud3f4\ub9ac\uc2f1\uc774 \ud544\uc694\ud558\uba70, \ubc18\uba74 \ub354 \ubd80\ub4dc\ub7ec\uc6b4 \uc7ac\ub8cc\ub098 \uc54c\ub8e8\ubbf8\ub284 \uae08\ud615\uc740 \ub2ec\uc131 \uac00\ub2a5\ud55c \ud45c\uba74 \ud488\uc9c8\uc744 \uc81c\ud55c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uac15\uc7ac \uacbd\ub3c4, \uccad\uc815\ub3c4, \uc5f4\ucc98\ub9ac \uade0\uc77c\uc131, \uc6a9\uc811 \uc218\ub9ac \ubc0f EDM \ub9ac\uce90\uc2a4\ud2b8 \uce35\uc740 \ubaa8\ub450 \ucd5c\uc885 \uc678\uad00\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce60 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc911\uc694\ud55c \uc678\uad00 \ubd80\ud488\uc758 \uacbd\uc6b0, \uae08\ud615 \uacac\uc801\uc11c\ub294 \uac15\uc7ac \uc720\ud615, \ub9c8\uac10 \ubaa9\ud45c, \uac80\uc0ac \ubc29\ubc95 \ubc0f \uae08\ud615\uc774 \uc0dd\uc0b0\uc5d0 \ud22c\uc785\ub418\uae30 \uc804 \uc2b9\uc778\uc5d0 \ud544\uc694\ud55c \uc9c8\uac10 \ub610\ub294 \uad11\ud0dd \uc0d8\ud50c\uc744 \uba85\uc2dc\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<h3>SPI \ub9c8\uac10 \ub4f1\uae09\uc774 \uc0ac\ucd9c \uc131\ud615 \ube44\uc6a9\uc5d0 \uc5b4\ub5a4 \uc601\ud5a5\uc744 \ubbf8\uce58\ub098\uc694?<\/h3>\n<p>SPI \ub9c8\uac10 \ub4f1\uae09\uc740 \uae08\ud615 \ube44\uc6a9\uc5d0 \uc9c1\uc811\uc801\uc774\uace0 \uc0c1\ub2f9\ud55c \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. C\ub4f1\uae09 \uc2a4\ud1a4 \ub9c8\uac10\uc5d0\uc11c A\ub4f1\uae09 \ub2e4\uc774\uc544\ubaac\ub4dc \ud3f4\ub9ac\uc2f1\uc73c\ub85c \uc774\ub3d9\ud558\uba74 \uac01 \ub2e8\uacc4\ub9c8\ub2e4 \uc810\uc9c4\uc801\uc73c\ub85c \ub354 \ub9ce\uc740 \uc218\ub3d9 \ud3f4\ub9ac\uc2f1 \uc791\uc5c5\uc774 \ud544\uc694\ud558\uae30 \ub54c\ubb38\uc5d0 \uae08\ud615 \uc81c\uc870 \uc2dc\uac04\uc774 15~30% \uc99d\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. A\ub4f1\uae09 \ub9c8\uac10\uc740 \ub354 \ub192\uc740 \ub4f1\uae09\uc758 \uacf5\uad6c\uac15, \ucd94\uac00 \uc0d8\ud50c\ub9c1 \ub77c\uc6b4\ub4dc \ubc0f \uc0dd\uc0b0 \uc911 \ub354 \uc5c4\uaca9\ud55c \uc678\uad00 \uac80\uc0ac \uae30\uc900\uc744 \ud544\uc694\ub85c \ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. \uc608\uc0b0\uc5d0 \ubbfc\uac10\ud55c \ud504\ub85c\uc81d\ud2b8\uc758 \uacbd\uc6b0, \uc5d4\uc9c0\ub2c8\uc5b4\ub4e4\uc740 \uc885\uc885 \uc678\uad00\uacfc \ucd1d \uae08\ud615 \ud22c\uc790\ub97c \uade0\ud615 \uc788\uac8c \ub9de\ucd94\uae30 \uc704\ud574 \ubcf4\uc774\ub294 \ud45c\uba74\uc5d0\ub294 A\ub4f1\uae09 \ub9c8\uac10\ub9cc \uc9c0\uc815\ud558\uace0 \ubcf4\uc774\uc9c0 \uc54a\ub294 \ud45c\uba74\uc774\ub098 \ub0b4\ubd80 \ud45c\uba74\uc5d0\ub294 C \ub610\ub294 D\ub4f1\uae09\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n<h2>SPI \ud45c\uba74 \ub9c8\uac10 \ud45c\uc900\uc758 \ud575\uc2ec \uacb0\ub860\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/h2>\n<p>SPI \ud45c\uba74 \ub9c8\uac10 \ud45c\uc900\uc758 \ud575\uc2ec\uc740 \uc774 \uc139\uc158\uc5d0\uc11c \uc124\uba85\ud558\ub294 \uae30\ub2a5, \uc81c\uc57d \uc870\uac74 \ubc0f \ud2b8\ub808\uc774\ub4dc\uc624\ud504\ub85c \uc815\uc758\ub429\ub2c8\ub2e4. \uc62c\ubc14\ub978 <strong>SPI Surface Finish<\/strong> \ub294 \ub2e8\uc21c\ud55c \ubbf8\uc801 \uc120\ud0dd\uc774 \uc544\ub2d9\ub2c8\ub2e4; \uc774\ub294 \uae08\ud615\uac15, \uae68\ub057\ud55c \uc774\uc81d\uc158\uc5d0 \ud544\uc694\ud55c \ud14c\uc774\ud37c, \uadf8\ub9ac\uace0 \uae08\ud615\uc758 \ucd5c\uc885 \ube44\uc6a9\uc744 \uacb0\uc815\ud569\ub2c8\ub2e4. \ubc18\uba74\uc5d0 <strong>SPI A-Grades<\/strong> offer premium, optical-quality looks, they come with higher maintenance and manufacturing costs. <strong>SPI C and D Grades<\/strong> \ud504\ub85c\uc81d\ud2b8? <a href=\"https:\/\/zetarmold.com\/ko\/%ec%82%ac%ec%b6%9c-%ea%b8%88%ed%98%95-%ec%99%84%eb%b2%bd-%ea%b0%80%ec%9d%b4%eb%93%9c\/\">Injection Mold Complete Guide<\/a> for a comprehensive overview.<\/p>\n<p>Need a Quote for Your Injection Molding Project?<\/p>\n<p>ZetarMold\uc758 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \ud300\uc73c\ub85c\ubd80\ud130 \uacbd\uc7c1\ub825 \uc788\ub294 \uac00\uaca9, DFM \ud53c\ub4dc\ubc31 \ubc0f \uc0dd\uc0b0 \ud0c0\uc784\ub77c\uc778\uc744 \ubc1b\uc544\ubcf4\uc138\uc694. \uc870\ub2ec \uad00\ub828 \ub9e5\ub77d\uc740 \uc800\ud76c \uc0ac\ucd9c \uc131\ud615 \uacf5\uae09\uc5c5\uccb4 \uc870\ub2ec \uac00\uc774\ub4dc\ub97c \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p>Request a Free Quote \u2192<\/p>\n<hr style=\"margin:2em 0;border:none;border-top:1px solid #e0e0e0;\" \/>\n<ol class=\"footnotes\">\n<li id=\"fn:1\">\n<p><strong>SPI:<\/strong> SPI\ub294 \uc131\ud615\ub41c \ud50c\ub77c\uc2a4\ud2f1 \ubd80\ud488\uc758 \uc678\uad00 \ubc0f \uae08\ud615 \uc694\uad6c\uc0ac\ud56d\uc744 \uc804\ub2ec\ud558\uae30 \uc704\ud574 \uc0ac\uc6a9\ub418\ub294 \ud45c\uba74 \ub9c8\uac10 \ubd84\ub958\uc785\ub2c8\ub2e4. <a href=\"#fnref1:1\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:2\">\n<p><strong>\uae08\ud615 \ud3f4\ub9ac\uc2f1:<\/strong> \ud3f4\ub9ac\uc2f1\uc740 \uc9c0\uc815\ub41c \ud45c\uba74 \uac70\uce60\uae30\uc640 \uc678\uad00 \ub4f1\uae09\uc744 \ub2ec\uc131\ud558\uae30 \uc704\ud574 \uae08\ud615 \uce90\ube44\ud2f0 \uac15\ucca0 \ud45c\uba74\uc5d0 \uc801\uc6a9\ub418\ub294 \uc81c\uc5b4\ub41c \uc5f0\ub9c8 \uacf5\uc815\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. <a href=\"#fnref1:2\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:3\">\n<p><strong>Ra (\ud3c9\uade0 \uac70\uce60\uae30):<\/strong> Ra(\uac70\uce60\uae30 \ud3c9\uade0)\ub294 \ud45c\uba74 \uc9c8\uac10\uc758 \uc815\ub7c9\uc801 \ucc99\ub3c4\ub85c, \ud3c9\uade0\uc120\uc73c\ub85c\ubd80\ud130 \ud45c\uba74 \ub192\uc774 \ud3b8\ucc28 \uc808\ub300\uac12\uc758 \uc0b0\uc220 \ud3c9\uade0\uc73c\ub85c \uacc4\uc0b0\ub429\ub2c8\ub2e4. <a href=\"#fnref1:3\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>SPI \ud45c\uba74 \ub9c8\uac10 \ud45c\uc900\uc774\ub780 \ubb34\uc5c7\uc778\uac00\uc694? SPI \ud45c\uba74 \ub9c8\uac10 \ud45c\uc900\uc740 \uae08\ud615 \uce90\ube44\ud2f0 \ud45c\uba74 \ud488\uc9c8\uc744 \uc815\uc758\ud558\ub294 4\ub2e8\uacc4(A~D) \uc2dc\uc2a4\ud15c\uc785\ub2c8\ub2e4. RFQ \uc900\ube44 \ubc0f \uacf5\uae09\uc5c5\uccb4 \uc790\uaca9 \ud655\uc778\uc744 \uc704\ud574 \ub2f9\uc0ac\uc758 \uacf5\uae09\uc5c5\uccb4 \uc18c\uc2f1 \uac00\uc774\ub4dc\ub97c \ucc38\uc870\ud558\uc138\uc694. \uc0ac\ucd9c \uae08\ud615 \uc124\uacc4\uc5d0 \ub300\ud55c \ub354 \ub113\uc740 \uc2dc\uac01\uc744 \uc5bb\uace0 \uc2f6\ub2e4\uba74, \ub2f9\uc0ac\uc758 \ud575\uc2ec \uac00\uc774\ub4dc\uc5d0\uc11c \uae08\ud615 \uad6c\uc870, \uc5f4 \uad00\ub9ac \ubc0f \uc81c\uc870 \uac00\ub2a5\uc131 \uac04\uc758 \uade0\ud615\uc5d0 \ub300\ud574 \ub2e4\ub8e8\uace0 \uc788\uc2b5\ub2c8\ub2e4. [\u2026]<\/p>","protected":false},"author":1,"featured_media":51633,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"SPI Finish Standards Guide for Injection Molded Parts","_seopress_titles_desc":"Explore SPI surface finish standards: A to D grades for mold surface cosmetics. Learn how polishing and textures affect tooling cost, quality, production.","_seopress_robots_index":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[43],"tags":[48,384,385],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/posts\/51630"}],"collection":[{"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/comments?post=51630"}],"version-history":[{"count":0,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/posts\/51630\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/media\/51633"}],"wp:attachment":[{"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/media?parent=51630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/categories?post=51630"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zetarmold.com\/ko\/wp-json\/wp\/v2\/tags?post=51630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}